.nav-bar {
  display: flex;
  font-size: 30rpx;
  height: 80rpx;
  line-height: 80rpx;
  border-bottom: 4rpx solid rgb(204, 204, 204);
  background-color: #fff;
  .title {
    flex: 1;
    text-align: center;
  }
}
.is-active  {
  color: #037efc;
  border-bottom: 4rpx solid #037efc;
}